Deni Zmak defeated Claudio Grassi 6-4 7-5 in the Italy F17 round of 16 on clay. The upset overturned the form book — Claudio Grassi came in leading the head-to-head 1–0. Deni Zmak claimed a first win over Claudio Grassi in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-08-31 | Italy F26 | R16 | clay | Claudio Grassi | 6-2 6-1 |
Averages over each player's completed matches in the selected window (1 vs 2). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. Small sample — read as indicative. About